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L. GARNIER.

FUEL FEEDING APPARATUS FOR EXPLOSION ENGINES.

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Patented Sept. 9,1919.

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Patented Sept. 9,1919.

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L. GARNIER. FUEL FEEDING APPARATUS FOR EXPLOSIQN ENGQNESJ arrucmon nuunommma.

1,315,625. PatentedSept. 9, 1919.

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UNITED STATES PATENT OFFICE.

LEONGE GABNIER, OF SAN SEBASTIAN, SPAIN.

Specmcaflon of Letters Patent.

Patented Sept. 9, 1919.

Application filed November 18, 1918. Serial No. 262,305.

To all whom it may concern:

Be it known that I, LEONCE Gnannm, citizen of the Republic of France, residing at 9 Calle Miracruz, San Sebastian, in the Kingdom of Spain, have invented new and useful Improvements in Fuel-Feeding Alpparatus for Explosion-Engines, of which t e following is a specification.

This invention relates to a fuel feeding apparatus for explosion engines of the known type in which the depression produced in the admission pipe of the motor is used to elevate the fuel from a main tank to a fuel feeding apparatus or au nl1ary feeding tank, from which the fuel is d rected to the constant level tank of the engine.

A characteristic feature of the fuel feeding tank constructed in accordance with the present invention is the provision of a float carrying a tube or tubular valve which acts as an air distributor so as to control the supply of fuel to the said auxiliary or fuel feeding tank.

In the annexed drawing:

Figure 1 is a vertical sect1on of a fuel feeding apparatus constructed in accordance with the invention.

Fig. 2 is a side elevation of a modified construction, the outer casing being partly broken away.

Fi 3 is a diagranunatical view of the fuel eeding apparatus in combination with fuel tanks and an explosion engine.

The apparatus comprises an outer casing r divided into an upper or receiving chamber R and a lower or delivery chamber R which may be put in communication by means of a valve H. In the upper chamber R, is arranged a float F which is adapted to vertically slide along the lower part of an air distributin tube T, the vertical displacement of t e float on the tube being limited at the top by a shoulder T of the tube T and at the bottom by a pin X carried by said tube. slide with a slight friction in a sleeve or neck S carried by the lid of the outer casing. The upper end of the tube T is closed by a plug provided with small 0 enin and carrying a valve P, the head 0 whic may seat aglainst an openin A provided in a nipple w ich is connects by a pipe 6 to the admission pipe 2 of the engine. The tube T is The tube T may itself also provided with lateral openings 0' which are adapted to register with openin s O provlded in the outer sleeve or neck Said neck S is provided with a cross pin N which extends through a vertical slot M of the tube T whereby said tube is guided in its vertical movement and prevented from turning so that the openings 0' can pro erly register with the openings 0. Tfie cross pin N serves also to limit the downward movement of the tube T within the sleeve S. Holes D are provided to put the inside of tube T in communication with the upper chamber R.

The outer casing is provided at its bottom with a nipple V which is in communication, by a pipe 5 with the constant level tank 3 of the carburetor 4 of the engine. A. hole L provided in the upper part of the outer casing serves to maintain the lower chamber R in constant communication with the atmosphere. The upper chamber R is in constant communication with the main supply tank 7 by means of a pipe B, a glass sleeve B being provided to enable the proper Working of the apparatus to be easily checked. B is a filtering wire screen.

The operation of the described apparatus is as follows: In the operation of the motor, the vacuum produced in the admission pipe of the same is transmitted into the upper compartment B through the opening A, the small openings in the plug carried by the upper end of the tube T, the interior space of said tube and the openings D which extend from the inside of the tube T to the chamber R. Said chamber R being supposed to be empty and the float being therefore in its lower position as shown in the drawing, the fuel issucked in and comes to the chamber B through the pipe B and glass tube B. The float F is thus raised and slides first along the tube T until its upper face comes into contact with the shoulder T, the tube T being then raised together with the float and reaching its uppermost position in which the valve P closes the opening A. The action of the depression in the admission pipe of the motor is thus stopped and in that position of the parts, the openings 0 in tube T re ister with the o enings O in sleeve S, so t at the atmos p eric pressure is admitted into the chamher R, above the fuel contained in the same, through the openings 0, O and D. The fuel in chamber R is thus permitted to flow past the valve l-l into the lower compartment R from which the Fuel passes to the constant level tank of the carburetor the nipple V. The fuel level being thus lowered in chamber R, the float F descends first along the tube T and, when the lower face of said float comes into contact with the cross pin X the tube 1 is itself carried on downwardly so that the suction opening A is again opened and the o cnings O and 0' come out of register. '1 a fuel in the main supply tank is thus drawn again by the engine into the chamber B through the )ipe B and the operation above described is repeated.

In practice, as the rate of flow of the fuel through the pipe B to the chamber R is reatcr than the outflow through the nipple the fuel level in the apparatus is subjected to slight variations only.

It will be remarked that the float F might be rigidly secured on the tube T but the dead motion arrangement described above is advantageous in that the operation Of the apparatus is smoother, the level of the fuel contained in chamber B being allowed to be raised or lowered durin certain periods before the tube T is positively actuated by the float.

is construction shown in Fig- 2 is substantially the same as that of Fig. 1 with the exception that the float F is not mounted 011 a downward extension of the tube T itself but pivotally connected to a, lever K which is itself pivoted at one end upon the lid of the outer casing, the free end of said lever moving between two studs U, U carried bv the lower part of the air distributin tube T.

' raving now described my invention what I claim as new and desire to secure by Letters Patent is: i

1. A fuel feeding apparatus for explosive engines comprising in combination a main fuel tank, a constant level tank, a delivery chamber, means aflordin a constant cornmunication between the ower part of said chamber and the constant level tank, means affording a communication between the upper part of said chamber and the atmosphere, a receiving chamber, a valve adapted to set'both chambers in communication with each other, means afiording a communication between the receiving chamber and the ain fuel ta k, a u lar neck n the r.ee ing ch mber, i bular neck ha ing l t al openings hich open into the at m sp re and being pro ided ith an end w ll, a tubular sli e al adapted to more n aid neck, mean afiording a ommunicat n between the inside of aid slide val and h recei nseham er, the slide valve mussels" having lateral openings which are adapted to register with the lateral openings in the tubular neck, a suction pipe, a conduit con-'- receiving chamber adapted to operate the slide va ve in an upward and downward dimotion.

2. A fuel feeding apparatus for explosive engines comprising in combination a main fuel tank, a constant level tank, a delivery chamber, means afiordin a constant communication between the fower part of said chamber and the constant level tank, means affording a communication between the upper part of said chamber and the atmos phere, a receivin chamber, a valve adapted to set both cham ers in communication with each other, means affording a communication between the receiving chamber and the main fuel tank, a tubular neck on the receiving chamber, said tubular neck having lateral openings which open into the atmos phere and being provided with an end wall, a tubular slide va ve adapted to move in said neck, means affording a communication between the inside of said slide valve and the receiving chamber, the slide valve having lateral openings which are adapted to register with the lateral openings in the tubular neck, a suction pipe, a conduit connecting said suction pipe to a port in the end wall of the tubular neck, a flap valve carried at the end of the slide valve and ada ted to close said port, a downward extension provided on the slide valve, said downward extension being provided with stops, and a float in the rece vin chamber, adapted to operate the slide va ve and move freely between said stops.

3. A fuel eeding pparat s for explosive eng ines c mprisi g n ombination a main file nk, a onstan el tank, a de i y chamber, means aflordin a constant communication between the ower part of said chamber and the constant level tank, means afiording a communication between the upper part of said chamber and the atmoshere, a receiving chamber, a valve adapted .0 se o h am e s n o uni t n ith ach the mean rdi a mmunic ticn e een th r iving 0 am er and th pa n uel tank, a t b la ne on th receiving h mber, sa d tub la ne k ha ing la eral peni g hich open into theatmosphere and beia pr id d with an en wall, a tubular hit va ve adapted to m ve in s id e k, means afiording a communicati n betwem the nside i said sl d valve and the rec i ing chamb r, the s i e valve having latera QPQ mgS lgh are adapt to re with he late al pp nings ;m th m alar n c a v vt en ipe, a conduit conn cting said suction i to a port in the end means for pivotally supporting said lever wall of the tu u er neck, a flap valve carat the opposite end and a, float in the receivried at the end of the slide valve and ada ting chamber, in en gement with the lever 10 ed to close said port, a. downward extensmn at a point intermediate its length.

5 provided on the side valve, said. downward In testimony whereof I have signed my extension bein provided with steps a lever name to this specification.

' having one en extending between said stops, LEONOE GARNIER Oopiu of this patent my be obtained for are neat: cash, by dressing the "Gommimonur of Patents, Wellington, D. 0. 

